Machine-gun



V. V. DIBOVSKY.

MACHINE GUN.

APPLICATION FILED MAY 25. 1918.

Patented Dee. 14, 1920.

VICTOR VLADIMIROVITCH DIBOVSKY, 0F NEW YORK, N. Y., ASS-IGNOR T0 THE TYPE- RELEASE CO., INC., 0F WILMINGTON, DELAWARE, A CORPORATION 0F DELAWARE.

Application led May 25, 1918.

To all whom 'it may conce/m1 i Be it known that I, VICTOR VLADIMmoviTcH DIBOVSKY, a Russian subject, captain of the Russian Naval General Staff, residing at New York, in the county and State of New York, and whose post-omce address is 57 West 75th St., New York city, N. Y., have invented certain new and useful Improvements in Machine-Guns, of which the following is a specification.

rI`his invention is for improvements in or relating to machine-guns and has particular reference to means for controlling the movement of the extractor.

In the accompanying drawings which illustrate one method of carrying out this invention as applied to a machine-gun of known type- Figure l represents a sectional elevation through the feed block showing the spring in position;

F ig. 2 represents a plan of the spring;

F ig. 8 is a detail view of the abutment.

Like reference letters indicate like parts throughout the drawings.

The extractor EX is shown in its upper position with the lock L in the firing position and the cartridge belt A with a cartridge B in position in the jaws of the extractor.

On the lower face of the front cover C which gives access to the feed block is attached by screws s a leaf-spring S, initially flat, which, near its free end, bears upon the edge C1 of an abutment situated upon the cover C. The act of screwing the spring to the cover in coperation with the edge C1 of the abutment causes the spring to assume the curved form shown in the drawing. The free end of the spring S1 is so situated that it lies in the vertical path of the extractor EX, and is engaged by the upper face thereof when the extractor has almost reached the limit of itsupward travel.

By the manner above described in which the spring S is mounted its end S1 is inclined downwardly and lies below the face of the abutment so that as the extractor rises it comes in contact with the free end S1 and tends to bend the spring about the edge lC1 of the aforesaid abutment. By this means the last portion only of the upward movement of the extractor is checked by a relatively strong spring acting through a small distance. Immediately the Specification of Letters Patent.

MACHINE-GUN.

Patented Der.. la, 1920.

Serial No. 236,580.

rise of the extractor is thus checked the firing of the cartridge already in position in the gun causes the lock L to move rearwardly in known manner thereby removing the. extractor from the influence of the spring. There is consequently no tendency for the extractor to be driven downward by the recoil of the spring before the horns or projections thereon have become engaged by the guide rails upon which they ride in known manner. When the lock returns 'and the extractor again rises in usual manner, the action of the spring is repeated in the manner just described.

To more effectually cushion the upward movement of the extractor, and prevent danger of breakage from rapidly recurring shocks the abutment C1 is provided on its lower face with a strip C2 of ber. This may, as shown, be held in place by a clamping plate C3 connected by suitable rivets to the body of the abutment.

By this arrangement a relatively yieldin cushion is interposed between the spring and the metal body C1 of the abutment. As shown the spring S comprises two superposed leaves but it will be evident that a single leaf, or more than two, may be employed as found desirable.

Having thus described the invention what is claimed is:

1. In a rapid fire machine gun, the combination with a gun casing. a lock casing movable longitudinally of the gun casing, and an extractor carried by the lock casing and movable transversely of the gun casing relative thereto, of means for cushioning the return transverse movement of the extractor, including a spring interposed be-` tween the extractor and gun casing.

2. In a rapid fire machine gun, the combination with a gun casing, a lock casing movable longitudinally of the gun casing, and an extractor carried by the'lock casing and movable transversely relative thereto, of means for cushioning the return transverse movement of the extractor including a leaf spring attached to the gun casing and extending into the path of the extractor.

3. In a rapid fire machine gun, the combination with a gun casing, a lock casing movable longitudinally of the gun casing, and an extractor carried by the lock casing and movable transversely thereof, of means for cushioning the return transverse movement of the extractor including a leaf spring attached to the gun casing and having its free end interposed between an abutment depending from the casing and the o upper end of the extractor.

4. In a rapid fire machine gun, the combination with a gun casing, a lock casing` movable longitudinally of the gun casing, and an extractor carried by the lock casing l0 and movable transversely thereof, of an spring attached to the gun casing and ex- 15 tending between said abutment and the upper end of the extractor.

In testimony whereof I aflix my signature.

VICTOR VLADIMIROVITCH DIBOVSKY. 

